[英]remove particular value from an inbox box value in javascript
我想从具有匹配值的输入框中删除值。
onclick(value){
var array = document.getElementById('related-products-field').value;
alert(array);
//array = 339,340,339,340,338
// if(value==339) ,339 should be remove
}
您可以使用正则表达式,或者如果您正在寻找特殊字符,例如:
string.indexOf(yourInput) !== -1;
要么
var entryArray = array.split(',');
var output =entryArray.filter(el=>el!==parseInt(input));
您可以使用如下所示的filter
。
var array=[1,2,3,4,5,6]; function f(){ y=array.filter(x=>x!==parseInt(document.getElementById("hi").value)); console.log(y); }
<input id="hi" type="number"> <button onclick="f()">click</button>
请参阅下面的内联评论:
var txt = document.getElementById("test"); var vals = [339,340,338]; txt.addEventListener("change", function(){ // Cache a reference to the input that triggered the event var self = this; // Loop over the array vals.forEach(function(item){ // Convert the field value to a number and compare against the array item if(+self.value === item){ // Remove the value from the field self.value = self.value.replace(item, ""); } }); });
<p>Type in a value and then hit TAB<p> <input type="text" id="test">
为了获得预期的结果,请使用以下使用数组拼接的选项
var remove = function(value){ var array = document.getElementById('related-products-field').value; arr = [339,340,338] console.log(arr.indexOf(parseInt(array))) arr.splice(arr.indexOf(parseInt(array)),1) alert(arr); }
<input type="text" id="related-products-field" > <button onclick="remove()">remove</button>
代码示例-https: //codepen.io/nagasai/pen/oqjZYM?editors=1011
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